Timing belt instructional model



FIG. 1 is a left front perspective view of one embodiment of the timing belt instructional model;

FIG. 2 is a right front perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken line showing of a drive belt in FIGS. 1 through 8 is included for the purpose of illustrating environment and forms no part of the claimed design. 

The ornamental design for a timing belt instructional model, as shown and described. 